Danfoss

The invention refers to a Tempering circuit manifold for a building tempering system comprising a control manifold (10) with a liquid main opening (11) which empties into a distribution channel (12) having at least two separate liquid distribution openings (13, 14, 15, 16, 17, 18), wherein the liquid distribution openings (13, 14, 15, 16, 17, 18) are designed in particular to feed different tempering loop pipes (C1, C2, C3, C4), and a valve device (20) having a single valve motor (21) that drives a valve assembly (22) designed to control the flow rate through at least two of the liquid distribution openings (13, 14, 15, 16, 17, 18) being controlled liquid distribution openings (13, 14, 15, 16, 17, 18).

The present disclosure provides a heat exchanger, including: a first heat exchanger core having a plurality of first heat exchange tubes arranged side by side, and a first fin structure and a second fin structure; a second heat exchanger core having a plurality of second heat exchange tubes arranged side by side, first ends of the plurality of first heat exchange tubes are in one-to-one communication with first ends of the plurality of second heat exchange tubes, so that the first heat exchanger core is in communication with the second heat exchanger core; a length tl of the second heat exchanger core is smaller than a length TL of the first heat exchanger core, and the second heat exchanger core is located on one side of the first heat exchanger core in a thickness direction; the first fin structure is located in a first region of the first heat exchanger core that overlaps with the second heat exchanger core in the thickness direction and the first fin structure is connected with the second heat exchange tubes; and the second fin structure is located in a second region of the first heat exchanger core that does not overlap with the second heat exchanger core in the thickness direction. In this way, the fluid flow resistance and the energy consumption and noise during heat dissipation are reduced.

This application provides a heat exchanger and an air conditioning system. The heat exchanger comprises: a first heat exchanger core comprising a first heat exchange tube having first and second ends; a second heat exchanger core comprising a second heat exchange tube having first and second ends, the first end of the second heat exchange tube being connected to and in fluid communication with the first end of the first heat exchange tube; a first manifold connected to and in fluid communication with the second end of the first heat exchange tube; a second manifold connected to and in fluid communication with the second end of the second heat exchange tube; and a third manifold connected to and in fluid communication with at least one of the first and second manifolds on a refrigerant inlet side and/or a refrigerant outlet side of the heat exchanger; wherein an angular bisector of an angle between the first and second heat exchange tubes extends in a vertical direction, and the third manifold is located on a side of the second heat exchanger core in a horizontal direction and located between projections of the first and second manifolds in the vertical direction or aligned with the first manifold in the vertical direction.

The invention relates to a controller (80) for a pump (42) with a variable pump capacity (PPC) in a pump unit (41). It has a sensor interface (81) for receiving internal signals (ITS) and a communication interface (82) for receiving the external signals (EXS) from a first fluid circuit (10) with further pump units (41a, 41b). It obtains an individual pressure increase (IPI) over the pump (42) with the internal signals (ITS). In a normal-mode operation, it controls the pump capacity (PPC) based on the external signals (EXS). It determines if the external signals (EXS) are received no longer and/or receives a failure-indication signal from the first fluid circuit (10), and then automatically switches to a failure-mode operation. It stores reference information (RFI) based at least on a part of the external signals (EXS) in the normal-mode operation in a memory (83) and controls, in the failure-mode operation, the pump capacity (PCC) based at least on the individual pressure increase (IPI) and the reference information (RFI); and/or it controls, in the failure-mode operation, the pump capacity (PPC) based at least on the individual pressure increase (IPI), on the pump capacity (PCC), and a failure-mode specific adaptation of a deadband (DB) for controlling the pump capacity (PCC). The invention also relates to a cooling distribution unit (30) with the controller (80), a data center cooling system (1) with the latter, and a method for controlling a pump (42).

The invention relates to a Gerotor-type fluid pump or Gerotor-type fluid motor (100) with a port plate segment (108). The port plate segment (108) comprises an inner recess (220) for a valve drive shaft (172) that is orbiting and rotating within the port plate segment (108). The port plate segment (108) further comprises a plurality of circumferentially arranged fluid throughput ports (136) for selectively fluidly connecting a valve spool segment (110) and a Gerotor-type fluid displacement segment (106) of the Gerotor-type fluid pump/Gerotor-type fluid motor (100). The inner recess (224) comprises at least two axially aligned segments (221, 222) with different diameters that are designed in an undetachable way.

The present disclosure provides a heat exchanger (100). The heat exchanger (100) includes: a manifold (1) having a manifold opening (11) passing through a pipe wall (10) of the manifold (1); a distribution pipe (2) disposed in the manifold (1) and having a distribution pipe opening (21) passing through a pipe wall (20) of the distribution pipe (2); and a connecting pipe assembly (3) including a first connecting pipe (31). The first connecting pipe (31) is inserted in the manifold opening (11), has an end connected to the distribution pipe (2) at the distribution pipe opening (21), and is in fluid communication with the distribution pipe (2). The distribution pipe (2) comprises a first distribution pipe section (25) and a second distribution pipe section (26) spaced apart from each other in an axial direction. The distribution pipe (2) further comprises a distribution pipe connecting section (27) connected between the first distribution pipe section (25) and the second distribution pipe section (26), and the distribution pipe opening (21) is formed in the distribution pipe connecting section (27).

The present invention relates to thrust pad (1) for a port plate (200) configured to be used with a pressure exchanger (1000), e.g. for a sea water reverse osmosis plant. The pressure exchanger (1000) includes a rotatable drum (1001), the port plate (200) with at least a first port orifice (201), and a port flange (100; 400) with at least a first fluid passage (101; 401). The thrust pad (1) is provided to improve a sealing concept of pressure exchangers. It comprises a plate-side surface (9), a flange-side surface (11), and a lateral surface (12). A curved shape of the thrust pad (1) is configured to be arranged at least partially between the port plate (200) and the port flange (100; 400). The thrust pad (1) extends in a thickness direction (Z) less than in a first direction (X) and a second direction (Y), wherein directions (X, Y, Z) are perpendicular. The thrust pad (1) comprises a through hole (2) that is configured to fluidically connect the first port orifice (201) of the port plate (200) to the first fluid passage (101; 401) of the port flange (100; 400). The present invention also relates to a port plate arrangement (250), an assembly of a port plate arrangement (250) and a port flange (100; 400) and to a pressure exchanger (1000).

The present invention relates to a thrust pad (1) for a port flange (101) of a hydraulic axial piston machine (1000). The thrust pad (1) is provided to improve a sealing concept of hydraulic axial piston machines. In this regard, the thrust pad (1) comprises a top surface (2), a lateral surface (3) and a bottom surface (4). Further, the thrust pad (1) comprises a curved shape configured to be arranged at least partially between the port flange (101) and a port plate (103) of the hydraulic axial piston machine (1000). The thrust pad (1) extends in a first direction (X), a second direction (Y) and a third direction (Z). The second direction (Y) is defined orthogonal with respect to the first direction (X) and the third direction (Z) is defined orthogonal with respect to the first direction (X) and the second direction (Y). Furthermore, the thrust pad (1) extends in the third direction (Z) less than in the first direction (X) and the second direction (Y), wherein the thrust pad (1) extends in the first direction (X) more than in the second direction (Y). The thrust pad (1) comprises a through hole (9), wherein the through hole (9) is configured to fluidically connect a first port (109) of the port flange (101) to a control hole (102) of the port plate (103). In addition, the present invention relates to a port flange, an assembly, and a hydraulic axial piston machine.

The present invention relates to a compression ring (6) for a piston slipper arrangement (2), wherein the piston slipper arrangement (2) comprises a piston slipper body (3) and a ceramic sliding element (7) and is configured to be provided in an axial piston machine, wherein the compression ring (6) is configured to compress the ceramic sliding element (7). The objective of the present invention is to provide a compression ring (6) which allows an easy assembly of a piston slipper arrangement (2). This objective is solved by a compression ring (6) that comprises first engagement means (8) configured for engaging with corresponding second engagement means (9) of the piston slipper body (3) in order to limit rotation of the compression ring (6) relative to the piston slipper body (3). The invention further relates to a piston slipper arrangement and to an axial piston machine,

The invention relates to a fluid regulator valve comprising an inlet port and an outlet port for connecting the valve to a fluid system, a regulating mechanism for opening and closing a valve opening within an inner valve chamber between the inlet port and the outlet port, wherein the regulating mechanism comprises a diaphragm provided in a diaphragm chamber, a valve rod and a control element. According to the invention, a pressure balancing conduit with two conduit portions is provided between the diaphragm chamber and an outlet port surface of the outlet port, wherein the pressure balancing conduit comprises a chamber opening and a port opening, the two openings opening into the diaphragm chamber and the outlet port, respectively. The invention also relates to a refrigeration system with a fluid regulator valve.